What might be a potential reason for a vehicle to fail inspection?

A vehicle may fail inspection if safety features are not functioning because these features are essential for the overall safety of the vehicle and its occupants. For instance, components such as brakes, headlights, windshield wipers, or airbag systems must operate correctly to ensure the vehicle can be operated safely on the road. If any of these components are found to be defective or not working at all during the inspection process, this directly compromises the safety of the vehicle, prompting a failure in the inspection.

While outdated license plates and a missing owner’s manual may be considered issues, they do not directly affect the safety of the vehicle in the way that malfunctioning safety features do. Customization options, unless they interfere with safety standards or the vehicle’s functionality, typically do not result in a vehicle failing inspection either. Thus, the presence and proper functioning of safety features are critical checkpoints in vehicle inspections, making this the most significant reason for potential failure.